【摘要】 用粳籼糯多元杂交选育而成的粳稻品种GC9具有下列特点:①早粳型,茎秆粗壮、穗大粒多、大粒,经济性状较好;②对粳型测验种和个别籼型测验种杂交育性正常,亚种间亲和谱窄。故特称之为特殊广亲和品种(Specialwidecompatibilityvariety,SWCV);③对培矮64S等部分籼型两用核不育系有专化性的亲和力和强恢复性,配制出的亚种间杂交稻组合表现高而稳定的结实率和充实度以及良好的产量结构和高产潜力,可作为亚种杂交稻的优良粳型恢复系开发利用。此类SWCV拓宽了亚种间杂交稻粳型恢复基因源和选育途径。更多还原

【Abstract】 The GC9,developed from multiple-crossbreeding of Japonica,Indica and glutinous rice,was characterized with:(i)early Japonica type with panicles with larger and more number of grains,strong and thick culm;(ii)normal fertility resulted from cross-test with all the Japonica testing-varieties but ony one or two of the Indica ones,which showed its limited compatibility inter-subspecies;(iii)special compatibility and strong restoring ability to the PTGMS varieties like Peiai 64S,which created some inter-subspecies hybrid combinations with high and stable setting rate and filling and yielding potentiality.It was concluded that GC9 could be used as good Japonica restorer line,to be applied in inter-subspecies hybrid breeding.更多还原